Title:
【発明の名称】多層多結晶ダイヤモンド固結構造体
Document Type and Number:
Japanese Patent JPH0692045
Kind Code:
B2
Abstract:
A polycrystalline diamond and metal element for use as a cutting element for drilling holes or similar uses. The cutting element comprises a polycrystalline diamond center portion and at least one metal side portion. The metal side portion is made from a soft metal having a Young's Modulus less than approximately 45x106 psi and is selected from a group comprising cobalt, nickel, iron, copper, silver, gold, platinum, palladium and alloys of these metals and intermetallic compounds containing these metals. Since the metal portion is sufficiently yielding the internal stresses formed in the polycrystalline diamond/metal bond during cooling and subsequent attachment to a tool body are signficantly reduced. The reduction the stress in the polycrystalline diamond/metal bond reduces fracturing in the diamond or metal and delamination of the polycrystalline diamond/metal interface during attachment to the tool and during use.
Inventors:
M Dwayne Houghton
Application Number:
JP15220884A
Publication Date:
November 16, 1994
Filing Date:
July 24, 1984
Export Citation:
Assignee:
Mega Diamond Industries Inco-Politeted
International Classes:
B32B15/04; B23B27/20; B23B51/00; C22C1/04; C22C26/00; E21B10/58; (IPC1-7): B23B27/20; B23B51/00
Domestic Patent References:
| JP5959308A | ||||
| JP5473391A |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)
Next Patent: 穿孔用給水装置